from launch import LaunchDescription
from launch_ros.actions import Node

def generate_launch_description():
    return LaunchDescription([
        Node(
            package='ros2_study',
            executable='hello_pub_node',
            name='pub'
        ),
        Node(
            package='ros2_study',
            executable='hello_sub_node',
            name='sub'
        ),
        Node(
            package='rqt_graph',
            executable='rqt_graph',
            name='rqt_graph',
            output='screen'
        )
    ])